Type-writing machine.



0. WOODWARD.

TYPE WRITNG MACHINE.

APPLIGATIQN mun rm. 5, 1900.

Patented Feb.15,' 1910.

2 SHEETS-SHEET 1.

14u15 TTUHNEY 0. WOODWARD.

TYPE WRITING MACHINE.

APPLICATION ULEB rms. 5, 190s.

Patented Feb. 15, 1910.

2 SHEETS-.SHEET 2.

UNITED STATES PATENT oEEioE.

OSCAR WOODWARD, F NEW YORK, N. Y.. ASSIGNOR TO DENSMORE TYPEWRITER COM-PANY, OF SYRACUSE, NEW YORK. A CORPORATION OF NEW YORK.

TYPE-W RI'ING MACHINE.

Specification of Letters Patent.

Patented Feb. 15, 1910.

A Application led February 5, 1906. Serial No. 299,536.

To all whom 'it 'may concern:

Be it known that l, Oscan Woonwann, citizen ot' the United States, andresident of -the borough of Manhattan, city of New York, in the countyof New York and State ot Newv York, have invented certain new and usefulImprovements in Type-Writing Machines, of which the following is aspeciteation.

,y M v invention, stated generally, relates to carriages for typewritingmachines, parts -coniinonly associated with said carriages and tocarriage mountings or bearings;

'lhe main ob`ect of the invention is to improve generaily devices of theclass i' ieri-ed to.

Other objects will appear in the course of the following specification.

To the above ends the invention resides in the features of construction,combinations ot devices and arrangements of parts hereiuafter fullydescribed and particularly pointed out in the claims. l

I have illustrated my improvements as applied to a machine resemblinggene il J one style of the typewriter commercially known as theDcnsinore, but it is to be understood that said improvements may beapplied in whole or in part to other forms of writing machines.

ln the accompanying drawings, Figure. l is a fragmentary to plan view ofa typewritiug machine ein odying my invention, parts being broken awayand other parts being omitted for the sake of clearness. Fig. 2 is anenlarged fragmentary side elevation of the upper part of the machine,parts heing broken away and other parts being omitted for the sake ofclearness'. Fig. 3 is an enlarged fra mentar)` rear elevation of a partliereina ter called the carriage truck, and showing roller hearings forthe carriage mounted in said truck. F ig. 4 is a sectional view, takenon a plane repre sented bv the line .2--2 in Fig. 3 and looking in thedirection of the. arrow, said Fig. i

. being drawn to a larger scalethan Fig. 3.

.Avv-.

esta.

'Fig 5 is a sectional view taken on the line y-y in Fig. 2E and lookingin the direction of the arrow, said Fig. 5 being drawn to the sa'niescale as Fig. 4. Fig. 6 is an enlarged fragmentary detail view at the,right-hand of the carria ge and looking from the front, sind view beingpartly in section'and showing one of the connections between the 'two parts of the platen carriage, Said two parts being hereinafter termed theplaten truck and the platen frame. Fig. 7 is a view corresponding toFig. 6 but showing some of the devices in different. relations fromthose 1n which thevappear in said Fig. G. Fig. S is a view taken on aplane represented by the line a-.r in Fig. 6 and looking in thedirection of the arrow. Fig. 9 is an en` larged fragmentary detail viewshowingthe carriage feed rack and the carriage Yfeed pinion as theyrappear when viewed -froin the right-hand side of themacliine, the feedrack being shown in section and out of mesh with the feed pinion inposition tor releasing the carriage. Fig. l0 is'an enlarged fragmentaryfront view, partly in section. showing the left-hand portion of thecarriage feed rack and its mounting. Fig. 11 isa sec tional view takenon a plane represented by the line 'ic-u' in Fig. 10 and looking in thedirection of the arrow. Fig. 12 is a fragmentary bottom plan view ofthecarringe feed rack on an enlarged scale. 13 shows in detail rear andside elevation the construction of the carriage feed pinion on anenlarged scale. Fig. 14 is an enlarged fragmeiitar)T horizontalsectional view taken through the longitudinal axis of the rear bar ofthe platen frame and showing the riglithand rear corner of said frame.

In the drawings, the main frame of the machine is shown in Figs. 1 and 2as fomprising a base frame l, corner posts '2 nd a top plate 3 securedat the top of the cl'rner posts. A set of type bars (not shown) ismounted suitably on the top plate and key levers (not shown) are mountedin the hase and suitably connected with the type bars. A shiftable railor track-way 4 is arranged above the top plate and is supported ateither side of the machine by arms :'i which are pivoted at. 6 to theframe of the inachine, said arms being connected with suitable mechanismfor imparting a fore and afi movement to saidi'ail 4 for shifting theplaten of the machine to change the case position thereof. Said platen.represented by the reference character 7, is cylindrical and is irovidcdwith an axle S, the ends of which have the usual finger wheels 9 securedto them. One. end of the platen is suitwheel 10 which is adapted tocoperate with any suitable construction of line spacing mechanism. Theplaten axle 8 is jouriialed in horizontally disposed side bars 11 of aplaten frame, the forward ends of said side liars beinnf connected by afront bar 12. A bearing block 13, in which 'Ls ivoted a wheel 1+i, issuitably secured to the ront bar 12 and said wheel l-i is guided andsupported in the grooved shift rail 4. The rear end of each side bar isprovided with a collar portion 15, which, as shown in Fig.'14, is formedwith a perforation 1G. A bushing 17, provided with a polygonal head 18and with an externally threaded inner end portion, enters eachperforation 1G, the inner p'ortion of the bushing screwing into the endof a hollow rod or bar 19, the ends of which are internally threaded at20 to cooperate with the threaded portions of the bushings 1T. Thehollow har 19, as will he best understood from Fig. 1, extendslongitudinally oi the platen and the ends of said bar are ref1 ceived ineountersiiiks 21 in the collars i5 (Fig. 14). i Bj.' tightenin the screwbush ings 1T the side bars 11 othc platen fraitie are clamped betweenthe heads of said bush-- ings' and the ends of the liollo.w bar 19, theconstruction beingr such that the hollow bar 1f) couaitutes with theside hais 11 and the .ti-ont bar 12 a rigid 'rectangular platen Aframe.rod 22 is received inthe bore of the hollow' rod or bar 19 and extendsthroughout the length of the latter, being journaled intlie screwbushings 1T, as seen in Fig. 14. The ends of the rod 22 projectlaterally beyond the heads 18 of the bushings and receive arms 23. These:irais are shown in Figs. l, 2, 6, S findvf), Each. arin is provided atits iop with a collar portion 24 which surrounds the rod and is split asindicated at 25, the split portions of ilul collars being connected byheaded screws 26 which vserre to secure tlie'ai'nis 2li in lilac@ on theends of the Vi'od 2" The construction such that the arms :23 are adinstable both longitudinally of the rod 22 and also cireiiinfcrcntialiylhercof.- The arms depend from the rod and their lower ends are formedwith holes into whit-.li are driven flanged busliingsil'., saidbushings' providing bearings for the devices which serve to connect theplaten frame with the being best shown in Figsi -carriagc truck, whichtruck and which devices will now be described.

The carriage truck is 'disclosed in its' entirety in Fig. 1; it.comprises :i bar-like por-A tion 28 extending longitudinally" of theplaten in the rear thereof and :irais at the ends of the bar, saidarmsprojeeting downwardly and forwardly from said bar and 2, i and 8.Each arm comprises a forwardly and downwardly extending cui-red ortion29am] a horizontally disposed portion it() which efe tends forwardlyfrom the lower end of tlie` curved-portion 2f). Midway of its lengtheach of the horizontal portions 30 is provided with threaded openingswhich receive screw bushings Si, the inner ends of said bushings beingclose to the flanges of the busliines 27 in the arms 23, and the outerends oria said bushings 31 proecting beyond the faces of the portions 30o the side arms. Eaclferm portion 30 is cut away as indicated at 30a topermit the associate arm 23 to ex'- tend downwardly close to thebushingi. The bushings 3i. provide bearings for pivot; members or boltswhich are most clearly disclosed in Figs. 6 and 7. Each pivot ineinbercomprises a pivot portion 32, a cylindrical bearing portion 33,- bearingin the associate bushing 31, a head 34 aiid a stem A helical wirespring,3G is coiled around the stem 35. One end of said spring abuts against.the head 34 and the other end against a. cover 3i' which is internallythreaded and screwed en the outwardly pro- )ceting en d of the associatebushing 31,'the top of -said cover being provided with an .opening topermit of the passage therethrough of the stein 35 of the pivot member.The springs 3G tend constantly to press the pivoty members inward towardeach other and serve to maintain the pivot portions 32 of said membersnormally in engagement-A with tlie bushings 2 in the lower ends of thearms 23, as clearly slioirntin Fie'. G. Suitably secured to the outerend o? each stem a cap piece SS which surrounds and bears upon theoutside of the associate cover 37. Each cap piece is provided with aslot 39 Yat; its inner end, said 'slot normally co- Y operating with ascrew stop 40 which is secured in the cover 3T, as seen in Figsl and 6.The pivot members, it will be under! stood, are iii alineincntand theirpivot portions 32 coperate-with the armsV 23, serving as pivots aboutwhich thearins swing when the platen carrier is moved back and forth tochange case, During this to-and-fro case shifting movement of the platenframe,

it will be'understood that a relative rotary movement takes placebetween the rod 22 and its bearings 1i'. Vi'hen it is desired *o detachthe platen frame or carri-J;- from the carriage truck in order to removeit. from the machine, the caps38 of the pivot niembers are pulledoutward away from each' other, disengaging thepivot -portions 32 fromtheir bearings in the arms 23. The parts are so proportioned that when alon i tudinal movement sullicieut to disengage tie pivot portions 32 hasbeen communicated to the pivot, members, the slots 39 in the caps 38will be disengaged from tlie'associated stops or screws 40. Y A rotarymovement' may then be communicated to the pivot inenibers by turning thecaps 38, said rotary movement carrying the slots in said caps out leer.

of register with the. stops 40, so that `when said caps are releasedtheir inner ends contact with the stops 40 and retain the pivot memberslocked in inoperative position, as indicated in Fig. 7. With the pivotmenibers inoperative as shown in Fig. T, th platen carrier isdisconnected from the. carringe truck and may be removed from themachine without disturbing said carriage truck.

As shown in Figs. C. T and S a metal strip 4l is secured b v screii's l2to thc under side of each carriage. arm portion $30, said metal .st-ripbridging the bottoni of the cut-away 3()a in said aria portion and beingcurved downwardly at 43 niidwa) of its length. ln replacing the platencarrier in the inachine the strips il serve as guiding and centeringmeans. the lower ends of the arms 23 being received in the downwardlycurved portions 43 of the strips. and hereby properly centered, so thatwhen the caps 2G are turned to rlease the pii'ot members to pcrinit oftheir rengagement with the arin 23, the bearings 2i in said arms will bcin alineinent with the pivot portions 3Q.

In order' to limitproperly the to-and-fro case shifting moi'ement of theplaten carrier in the carriage truck. I provide means which will now hedescribed. Said means comprise brackets 44. shown in Figs. 1, 2 t3. 'iand S. The brackets 44 are secured against the outer faces of the sidearms of thccarriage truck b v headed screws 45 which pass freely throughenlarged openings 46 (Fig. if; in the brackets 44 rnd are received inthreaded openings in the horizontal arm portionstl. llach bracketis enta way as indicated at -li' in order not to interfere with the outwardlyprojecting cover 3T. Projecting inwardly at right angles from the body.of each bracket 1H are walls 48 spaced apart as shown in Figs. I and S.The toi-ward wall receives a limiting .screw -'H which isV provided witha check nut 50. An .|d iusfing screw 5l is threaded in each downii'afdlycurved arm portion 29 of the carriage truck, the forward end of saidscrew aLLtting against the rear face of the rear ivall 48 of theassociate bracket 4l. rlhe ends ot' the rod are adapted to contact withthe rear wall 48 and with the end of the screw 49 in the front wall ofthe bracket 44, and thus serve as stops on the platen carrier whichcooperate with stops on thc carriage truck to limit the case shift.movement of the platen carrier on the truck. By adjusting the screw 49toward or away from the opposite wall 4S the amount. of the case shiftmovement. is regulated, this regulation, it will be noted, beingobtained by a single operation. In assembling the parts, the screw 4S)may be secured in proper position by the check not. 50 and thereafterthe relation between thc two stops on the carriage truck at. cach side lIl i i l i i l l i i `45 which secure the brackets 44 in place areloosened and thereafter the associate ad justing screws 51 are screwedin or out as desired. The brackets 44 aic then brought into contact withthe ends of said adjusting screws 51 and thereafter the securing screwsl5 are tightened to retain the brackets in their new and adjustedpositions. In one of its ease positions, the platen carrier is disposedas shown in Figs. l. E2 and 8 with the ends of the rod :22 in contactwith the ends of the screws 49. When it is desired to change case` theshift rail 4 is swung rearwardly about its pivots b v moans of snitableactuating mechanism before referred to, thereby causing the platencarrier to 'oe moved rearwardly, the arius 2?, swinging on the pivotalmembers and thc ends of the rod Q2 moving away from the screw stops 4S).The rearward movement of the platen carrier continues until the ends ofthe. rod Q2 contact with the rear walls 48 of the brackets 44. 'hen thisoccurs the platen is in proper position for writing in the other case.

Referring now to the carriage truck and the means for guiding andsupporting it, reference to be had chietly to Figs. 1` 2, 3, l and 5i.The bar 9.8 is cut away or slotted midway of its length at the. rear, asindicated at 52. Received within the slot is a bracket 53. ,\t its topsaid bracket is provided with laterally disposed cars 54 which areprovided with pcrl'oratioiis 55. Headed screws 56 pass freely throughthe openings 55 and are received in threaded ppcnings in thc top ofthebar 25, thereby securing said bracket in place. The shanks of thescrews 56 are smaller than the openings 55, the construction being suchthat when said screws are loosened said bracket.- has a limitingmovement fore and aft of the machine by reason of the enlargd openings55. As best shown in Figs. 3 and 4, thc bracket is provided with anopening 57 which receives a wheel 5S, the axle 5!) whereof -iSvertically disposed and is coiled at its ends. 'Below the axle 59 thebearing bracket. 53 Aisprovided with a threaded opening which receivesan upwardly extending threaded ball-cup 60, the lower end of saidball-cup being rovided with a polygonal adjusting hea. (3l and the upperend being cupped out to provide a seat for a set of anti-friction balls62 which cooperates with the lower end of the axle 59. Above the wheel5S the bracket 53 is provided with a threaded opening G3 in the lowerportion of which the axle 59 turns. Screwed into the opening 63 from theto is a threaded ball cup 64, the topofwliicii is provided with a nick65 for an.: adjusting a c rayman-ruimen tool and the bottom of which isformed with a hall scat which receives a set of anti-friction balls GG,said balls` cooperating with the upper end of the axle 59. A locking nut6T is screwed on the ball cup member Fri and serves to retain the latterin 'adjusted position. The adjustable cups 60 and 64 not only allord anadjustment for the bearing balls but they also afford a verticaladjustment of the wheel 58 relatively to the truck. At either side ofthe threaded opening 66, the bracket 53 is provided with horizontalthreaded openings which receive adjusting screws GS, the ends of saidscrews abutting against, the' forward wall of the cut-away or slot- 52in the carriage bar 28. By loosening the securing screws 56 theadjusting screws GS may be turned in or out to adjust the bracket 53fore and aft of the machine transhearing for the carriage. T

vcrsely of the carriage bar. Near its ends the carriage bar 28V isprovided with down- -wardly extending lugs G9. said lugs being formed attheir front sides with slots Tt) (Fig. 5), which receive bearing wheelsTl. The wheels 71 have vertically disposed axles T2, the ends whereofare preferably coiled, the lower end ot' each coperating withamifriction balls 73 which are seated'in a hall cup 74 received in athreaded opening in the lug G9, said ball cup being entered in saidopening from the bottom and being provided with a polygonal head 75 bywhich it may be readily adjusted in place. The upper end of each axle 72cooperates with antifriction balls 76 which are seated in a screw likeball cup T7, the 'latter screwing down through a threaded opening 78 andbeing provided with a locking nut 79 which serves to hold it securely inplace after it has been properly adjusted.

lhc peripheries of the wheel 58 and' the wheels T1 mounted on thecarriage truck are preferably rounded and coperatie with Vgrooves S()formed in the inner faces of vertically disposed parallel' walls 81 of atrack-way, thereby providing a three-'point e walls 81 are connected atthe bottom by a base portion 82. The track-way, comprising thehoriizontal bottom portion 82 and the'parallel vertically disposed walls81, resembles a trough, as willbe best understood from a considerationof Figs. 1 and 2 Said track- .wav is suitablv securedto lu s S3 inte alg gr with and extending -upwardl from the top plate 3 o' the machine:Tris construction provides a track or gaine, way or the roller bearingsof the carriage which is exceptionally stronigeand rigid -and the'tracks '80 wherein mav. readily formed in parallelism and willthereafterremain in parallelism. -The wheels 71 coperate with the front track-way8O and the wheel 58.with

the rear track-way 80.. The adjusting' screws 68 provide means foret'ecting a horizontal adjustment of the rollersl 58 and 7l. for takingup wear of the rollers in the bearings SO while the adjustable ball cupswhich coperate with the axles of each wheel provide means for adjustingthe carriage truck verticallv in respect of the trackway and alsoprovide independent, adjusting means for adjusting each wheel 58 or .71relatively one to another' to secure proper cooperation of the rollerswith their tracks SO'and to prevent them from binding therein. Thewheels, it will be noted, turn on ball bearings and the frictiongenerated is reduced to a minimum.. I desu-e it to be understood thatlwhere in the Ysubjoined claims roller bearings are recited, said rollerbearings may be either balls or wheels. Near the right-hand end thebottom S2 of the track-way is provided witlra threaded open- -ing whichreceives a screw cup Si (Fig. 85

2) open at the top. A plunger stop 85 is seated in the cup and isnormally projected upward into the path of the right-hand lug (if) onthe carriage bar under the influence of a coiled springSG whichsurrounds the stem 8T of said plunger and is confined between theplunger head and the vbottom of the` screw cup 84. The stem of theplunger stop 85 project downwardly through an opening in the bottom ofthe screw cup and is provided with a cap 8S, said cap being formed witha slot S9 which t .iperates with a screw `stop 90 fixed in the side ofthe screw cup 34. Said screw cup is provided with a polygonal adjustingportion 91. The construction resembles generallj1 that of the pivotmembers and the associated parts shown in Figs. t3 and 7. Normally theplunger stop 85 will coiiperate with the riohthand lug G9 to prevent theaccidental with- 105 drawal ofthe arriage truci: from the trackway,when, however, it is desired to remove the carriageltruck from themachine the cap 8S may be pulled down until its slot; 89

disengages from the stop 90, whereupon the 110 cap may be turned so thatits top edge will cooperate with the stop 90 to maintain' the plungerstop 85 lowered and out of the ath. of the carriage lug'tt). An arm 92tigs.

1 and 2') projects rearwardly from the car- 115 across the top plate.The leftward move-|25 ment of the carriage under the influence of* thespring drum, however, is normniy con.` trolled by a carriage feed rackand coper ing devices.

The carriage feed rack isl indicated by the 139 fr connected withreference numeral 16 and is shown in Figs. 1, 2. 9, 10, 11 and 1Q. Saidfeed rack is provided with downwardly projecting teeth 9i. The frontfaces of said teeth are beveled, as indicated at. 98, for a purposepresenti).v to be described. The ends of the feed rack JG are providedwith bearing blocks 9E?. These bearing blocks are .provided with slotsor kert's which enable the blocks to be l'itted over the ends of therack tnt, as clearly shown in Fig. 11. The blocks are secured in placeby screws 100 which are received in threaded openings vin said blocksand pass through elongated holes 101 (Fig. l0) in the carringe rack. Byloosening the screws the rack may be vertically adjusted in respect ofits bearing blocks. The outer ends of said bearing blocks are providedwith bearing openings 102 which cooperate with the pivot portions 103 ofpivot screws 104, said pivot screws being received in threaded openingsin the curved portions 2S) of the side bars of the carriage truck.Locking nuts 105 serve to secure said pivot screws in adjusted position.By this construction it will be seen that the carriage feed rack 96 ispivotally mounted in the sid-s of the carri-age truck. A horizontallydisposed coiled spring 106 has its forward end hooked around a pin .107on the top of the carriage feed rack, th rear end of said spring beingadjustably secured to a screw 108 ou the carriage truck. haid springplays in a groove in the carriage bar 2H' and constantly urges thetoothed portion or lower edge of the feed rack 96 forwardly about itspi". ots and norman) maintains said feed rack in engagement with acarriage feed pinion 10!) tired to the forward end ot` a horizontallydisposed shaft llt). The shaft 119 rotates in tixed bearings andservesto connect said feed pinion with escapement devices (not shown) ofsuitable construction, which atV printing operation are adapted tocooperate in a known manner' to permit the,

' carriage to be drawn a letter space leftward under the influence ofthe .spring drinn 95. As clearly shown in Fig. 13, the teeth 111 ot thecarriage feed pinion are beveled at the rear. as indicated at 112. sothat the rear edges ot' said teeth are comparatively sharp.

'l'he platen carriage may be released from the cscapement devices sothat it may be moved frwlj.' from side to side of the-ma chin'c acrossthe top plate by means that are now to be described.

Secured against the rear face of the. let'thand bearing block 9i) (Figs.t), l0 and 11) is a releasing member comprisinga body portion 113, andan angular artn extending from the body portion upwardly and latcrallyoutward and indicated by the reference numeral 114, said arm havimer atits outer cnil a cross arm 114 provided with lingerpieces 115 and llt.The bodv portion 1125 of the releasing member is perforatcd to permit ofthe passage of the smevvs 100 which serve to secure the releasing memberin place against the. rear of the left-hand bearing block 11). When theplaten carrier is in normal position and it is desired to free orrelease the carriage. from the escapeinentdevices. the finger piece orrelease key 116, which is the forwardly projecting key of the doublekeyed release member. is depressed. This .serves to swing the rack norearwardly against the force exerted by tht` spring 10G, disengagingsaid-rack from the feed pinion 109. The released position of the rack isindicated in Fig. 9 from which it will bel seen that the rack iscompletel)7 separated from the pinion so that the carriage may be movedfreely in either direction across the top plate. Then pressure isremoved from the key 11G, the s )ring 1013 swings the lower' end of therack orwardly about its pivots and the bevels 98 lon the rack teethcoperate with the bevels 11i) on the pinion teeth to effecten easy andce1; 1in r'engagement beltween the carriage feed rack and the ear riagefeed in ion. It the .platen carrier happens to 1n raised position,exposing the writing and the under side of the platen,

and it then be desired to'releasethe carriage from the carriage feedingintanism, ttie tinger ieee-115 will be found conveniently situate forthe purpose. The finger of the operator engages the back of the key 115land pulls it. forward, ther-hyeteetmg the discin gagement ofthe rackndpinion m thc nntn- Yner described above.4

Various changes may be made without dep'arting from the spirit and scopeof my in#v vention.

What i clainrals new and desire; to secure-A" by Letters latcnt,iszs'- 1. In a typewriting. machine, the combination ot' a platen; aplaten earriageeoniprising two parts, one shiftahle on the other;

a shaft extending longitudinally of thc platen and Vbearing in theshiftabli'-, part, said shaft serving as an axle about which saidshiftahlc part may he turned to expose the writing; and arms rigid withsaid shaft,

said arms being pirated on the non-shifting f part of .said carriage.

2. ln a typcwritinlg machine. thel combination of a platen; a platencarriage comprisiupr two parts, one shiltable on thc other;

and izonnectionsvlwtwecn said parts. said"- conluwtions comprisiitgnshaft which serves as an axle. about which thc shiftahle part may beturned to expose the writing and arms rigid with said shalt, said armsbeing pivotallv eonnecteil with the non-sbiftablev part of saidcarriage.

il. 1n a tylwwriting machine. the combinationv ol' a platen; ashil'table platen frame comprising a hollow bar extendingrlor-gittldlnallynf the platen: :l shaft exteudingbl'V through lli'e bomnl' said hollow bar; a car-V v tion of a platen; a shiftable platenframe comprising a hollow bar extendinglongitudinally of the platen; ashaft extending through the bore of said hollow bar and journaled nearits ends in bearings iii the hollow bar; arms secured to said shaftoutside its `iournals; and a carriage truck on which said arms arepivoted.

in a typewriting machine, the coiiibinal tion of a platen; a sliitftableplaten frame comprising a liollowbar extending longitudinally 'of theplaten; screw bushings c0- operating with the sides of said platen frameand the ends of said hollow bar; a shaft extending through the bore ofsaid hollow bai and journaled in said bushings; a carriage f truck; andconnections between said shaft and said carriage truck.

G. 11i a typeii'riting machine, the coiiibination of a platen; a,shiftable platen frame comprising a hollow bar extending longitudinallyof the platen; a shaft extending through the bore of said hollow bar andjournaled near its ends in bearings in the Vhollow bar; arms, eachprovided with a splitV collar atone end and with a bearing at the other,the collar portions of said arms being secured oit said shaft outsideits ioiirnals;

and a carriage truck provided with pivots col operating with thebearings in the ends of said arms.

VT. ln a typewriting machine, the combina` tion of a platen;a'sliiftable platen frame comprising a hollow barexteiidiiiglongitudinallj, of the platen; screw bushings conneetiiig thesides of Said platen frame with the ends of said hollow bar; a shaftextendiiig through said hollow bar and journaled f in said bushings;arms= each provided with a split collar at one end and with an openingprovided with a bushing at the ther end; the collar portions of saidarms being secured on said shaft outside said screw bushings; and acarriage truck provide-l with pivots coperating witli'the bushings insaid arms.

8. In a typewriting machine, the combination of a platen; a shiftableplaten frame comprising a hollow7 bar extending longitudinally of theplaten; a shaft extending through the bore of said hollow bar; aearriagc truck; connections between said shaft and saiC carriage truck;and brackets on said carriage truck, said brackets coperating with theend ortions of said shaft.

9. In a. typewriting machine, the combii nation of a platen; a shiftableplaten frame carriage truck, each pair eoperative with one of the stopson said platen frame, and .each of said pairs of stops .being adjustableata single operation.

l0. ln a typewriting niaehine, the combination of a platen; a shit'tablepla-teu traine therefor; a carriage truck with which said platen frameis connected: stops on said .platen frame; and pairs of stops on saidcarriage truck, each pair cooperative with g one of the stops on saidplaten .traine and i eaeh'of said pairs ol' stops being adjustable Iwithout varying the relation between the two stops comprising the pair.i ll. ln a tni'pewritiug machine, the combi- Q nation of a platen; asliiftable platei; frame l therefor: a carriage truck with which said`platen frame is connected; stops on said platen frame: -and pairsl or'stops on said 4"carriage truck, each pair cooperative with one of thestops on said platen traine and i the stops of each pair of stops beingrelatively adjustable; and means i'or adjusting both stops of each pairat a single operation without altering the relation between tlieiu.

lLt lii a typewritiugmai-bine.y the combii nation of a platen; a.shit'talde platen frame n which said platen is supported: a eariagetruck with which said platen frame is connected; stops on said pl: tenframe; brackets. secured to said carriage truck, each of said bracketscomprising oppositglgf' disposed walls; a stop adjustable i'ii one wallif each bracket, said last recited stop and l the other wall ot' theassociate bracket being icoperative with one of the stops on saidiplaten' frame; and means foi-varying the relation between the stopportions on each in which said platen is supported: a earriage truckwith which said platen fraaie is connected; stops on said platen traine,ibrarkets on said carriage truck. sert-.ws seeach of said bracketscomprising oppositely disposed walls; a stop adjustable iii one wall ofeach bracket.l said last recited stop and the other wall of theassociate bracket being co'iperative with one of the stops on saidplaten frame; and screws in said carriage truck, one of said screwsabutting each bracket and being adjustabiVx to `vary the relationbetween said bracket and said earriage truck.

l-l. Iii a typewriting machine, the combination of a platen; a twdpartplaten carriage comprising a carriage truck and platen fianiethc twoparts being pivotally eon nected; pivot members in one partcoperatiiig-with bearings in the other part to enable one part to beturned on the other; screw bushings in which said pivot members slide;

lOll

nation of a platen; a sliiftable platen traine i curing said brackets tosaid carriage true-k,

iso.

for u per and lower case writing` connections tween said partscompristmgr spring- .lng portion. a head and a stem: covers et prisingtwo parts. one shiftable on the other for upper and lower case writing.connecnation of a platen; a platen carriage comprising two parts. oneshiftable on the other: connections between said parts comprising,vspringt-messed pivot memlx-rs: and means for l 'ings in the other partto enable one part to covers screwed on said bushings: and coiled lsprings within said covers and cooperating with .said pivot members. Ina typewriting machine. the combination of a platen; a two-part lvlatencarl rlage comprising a carriage truck and platen l frame. the two partsbeing pivotally conl neeted; pivot members in one part cooperi atingwith bearings in the other part to enable one part to be turned on theother. each member comprising a pivot portion. a bearoperatingr with theheads of said pivot members: and springs coiled kon the stents andvhoused within said covers.

1G. ln a typewriting machine. the combination of a platen a platencarriage comprising two parts pivotally eonneetedi and pivot members mone part cooperating with bearings in the other part to enable one partto be turned on the other. the construction and arrangement of saidvpivot members beinj r such that theyv are movable longzitudinall).v tol engage and disengage their bearings and are rotatable on their ownaxes to a position in which they are maintained inoperative.

1T. ln a typewriting machine, the combination of a platen, a platencarriage comprising two parts` one shiftable on the other l l pressedpivot members by means of which one part of the carriage may be detachedfrom the other. and means for locking said pivot members in releasingpositions.

18. In a typewriting machine. the combination of a platen, a platencarriage comtionsV iet'ween said parts comprising pivoted arms. certainof the pivots for said arms being spring-pressed and iu the nature of:dined bolts that are movable to releasing positions to enable one partof the carriage to be detached from the other. and means for lockingsaid spring pressed bolts in their releasing positions.

lit. In a typewriting machine. the combilocking said memlwrs ininoperative position so that one part of the carriage may be detachedfrom the other` v 2t). ln a t'vpewriting machine, the combination of aplaten: a platen carriage comprising two parts pivotally connected.pivot i members'in one part etiperatmg with iearbe turned on the other:srrewbushings in which said pivot members slide: covers screwed on saidbushings: coiledsprings within said covers and cooperating with .saidpivot members; caps on said members;

and portions on said covers cooperative with said. caps to maintain saidmembers inoperative. l

21. ln a typewritin;r machine. the combination of a platen; a two-partplaten carringe comprising a carriage truck and platen frame. the twoparts being pivotally connected; pivot members in one part cotiperatingwith bearings in the other part to enable one part to beturned on theother, each member comprisingv a pivot portion, a bearing portion. ahead and a stem: covers eooperating with the heads of said pivotniembers; springs coiled on the stems and housed within said covers: andcaps on said stents cooperative with projections on said rovers tomaintain said membeis inoperative.

22. In a type-writing machine, the combination of a platen; a platencarriage comprising a bar; a trough-like track-way, the inner wallswhereoie are oppositely' grooved;

. wheels mounted at the sides of said bar and cooperative with saidgrooves; axles on said f wheels: ball-bearing cups adjustable on saidcarriage bar; and anti-friction balls in said cups. said ballscooperating with the axles of said wheels.

23. ln a typewriting machine, the combination of a platen; a platencarriage conv prising a bar: a tronghlike track-way, the inner wallswhereof are oppositely grooved; wheels` mounted in ball bearings at thesides of said bar and cooperative with said grooves: means for adjustingsaid wheels.

'means for altering?r the relations between said wheels transversely ofsaid bar.

In a typewritingr machine, the combination of a platen; a platencarriage comprising a bar: a trough-like track-way, the inner wallswhereof are oppositely grooved; wheels at one side of said carriage bareooperating with one of said grooves: a bracket secured at the otherside of said bar; a wheel in said bracket cooperative withtbe othergroove in the track-way; and means for adjusting said bracket to taketip-wear in the hearings. v

25'. ln a typewritingr machine, the combination of a platen: a platencarriage comprising.: a bar; a trough-like track-way, the inner wallswhereof are oppositely grooved: ball bearing cups adjustable in one sideof said carriage bar; anti-friction balls in said cups; wheels bearinron said balls and cooperative with one of the grooves in said track-way;a bracket secured at the other side of said bar: ball cups adjustable onsaid bracket anti-friction balls in said cups; a wheel bearing on saidballs and coperatinlgr with the other groove in tbe track-way; and meansfor adp1stin} r said bracket for taking np wear in the bearings of thecarringe.

2G. [n a typewriting machine7 the combi-- nation of a platen; aplatencarriage comprising a bar; a trough-like track-way, the

inner walls whereof are oppositely groored;

a pair of wheels spaced apart at oncside of said carriage bar andcooperating with one of said grooves; and a wheel at he other side ofsaid bar and midway between said pair of wheels, said last recited wheelc0- operating with the other groove in the trackway.

27. In a typewriting machine, the. combination of a platen; a platencarriage coniprising a bar; a trough-like track-way, the inner wallswhereof are oppositel)` groorezl; sets of ball caps adjustable atV oneside of Said carriage bar; a pair of wheels spaced apart and cooperatingwith one of said grooves, each of said wheels bearing in one of lsaidsets of ball cups; a bracket secured at the other side of said carriagebar and provided with adjustable ball cups; antirietion balls therein; awheel bearing on said balls and cot'iperating with the other groove insaid track-way. said wheel being disposed midway between the first namedpair of wheels and said bracket being ad- 'nstable to take up wear inthe. carriage,

earing.

2S. ln a typewritinglr machine.l the combination of a platen; a platencarriage; a carriage feed rack pivotally mounted on said carriage; afeed pinion on the frame of the machine with which said feed rat-linormally cooperates; means for giving rotary morenient to said feedraeli to disconnect it from said pinion to release the carriage; and

means for causing said feed rack to retingage with said pinion, tbeteeth of said feed rack being beveled on the reengaging side.

'29. ln a t \pewriting machine. the. eombi-` nation of aplaten; a platencarriage; a earriage feed rat-l; pivotallv mounted on said carriage; afeed pinion on the frame ot' the machine with which said feed racknormally coperates; means for giving rotariv movement to l said feedrack to disconnect it from said pinion to. release the carriage; and

means for causing said feed rack to rengage with said pinion, the teethof said feed rack being beveled on the rengaging side. and the teeth ofsaid feed pinion being beveled on the rengaging side.

30. 1n a ty iewriting machine. the combination of a platen; a platencarriage; pivot pins adjustably mounted on said carriage;

a carriage feed rack; detachable bearing members provided with bearingopenings for receiving said pivot pins: and-means for securing saidmembers to said feed rack. f

31. ln a. typewriting machine7 the. combi- 60 nation of a platen; aplaten carriage; screw pins on said carriage; a carriage feed rack;bearings` suitably secured at the ends of said feed rack and cooperativewith Said screw pins; a double finger piece secured on said feed rack;and a feed pinion normally co-l operative with said feed rack, saidtinger piece being operative to swing said rack out of engagement withsaid pinion, one portion v of lsaid'tingcr piece being convenient for'10 manipulation when said carriage is in normal position and the otherportion of Said linger piece beingr convenient for manipulation when theplaten is raised to expose the, line of writing.

ln a typewriting machine, the combination of a platen; a platencarriage; a guide-way for said carriage secured on the frame of themachine7 and a spring-pressed stop mounted on said guide-way and adapt--ed to cooperate with said earria e. to prevent the accidentalwithdrawal of the saine from its guide-way, said spring stop beingconstructed so that it. may bemoved to and locked in inoperativeposition to permit; of

the removal of said carriage from the machine.

33. ln a typewriting machine, the combination of a. platen; a platencarriage: a carria ge feed rael: pivoted on said carriage and adapted tobe rotated about an axis which passes through the feed rack itself; afeed pinion with which Said rack normally meshes; and key actuated meansfor giving rotar \y movement tu said rat-liV to free it from saidpinion` the releasing movement; of the rack being transverse of the,plane of rotation of the pinion7 the teeth of both said rack and saidpinion being beveled at their ret'sngaging sides.

'Signed at the borough of Manhattan, city of 1New York, in the count)vof New York, and State of New -York, this 3d day of February, A. l).19H6.

OSCAR 'UODW'ARD. W it messes:

l. M. 'nLLs, M. l". llixswnnnn.

